Lock



Dec. 19, 1922.

B. J. COHON ET AL.

l `LOCK.

FILED Nov. 6,1920.

3 SHEETS-SHEET 2.

"arulllllllllldw'lmvlll ATTORNEY Patented i9, i222. Y

arnesi-e m in ernst' essie.

BENJAl/IN J. COI-ION, O "WESTW'QOD, NEW JERSEY, AND LOUIS MSKUWTZ, 03?

BROOKLYN, NEW YORK.

' LOCK.y

To @ZZ ywhom may concern.'

Be known that ive7 BENJAMiN J. CoHoN and Louis lldosnowirz, citizens of the United ti Jfes, and residing in iilestivood, in the county oi' Bergen and State of New7 Jersey, and Brooklyng in the county of Kings and State of New York, respectively, have inn vented certain new and usefulr improvements in Locks, of which the `l'olloivingl is a specification. y .z

Qur invention relates to'an improved lock; particularly a lock comprising a bolt and parte tor enabling the bolt to be moved into and out of engaging position with respect to strike-plate cooperating with same.

.lncbject oi this invention is to provide a locli having a compound bolt consisting of plurality of members each ot Which receives bodily movement when the lock is to be ac tuated; the boltfthus constituting a double# latch bolt which can havepositive engagement with the strike-plate at more than one point,and thus render 'the lock incapable of being opened except by proper manipulation of the parts in the contemplated and regular way. I i f Another object of our invention is to provide a locl of strong but simple construction, inexpensive to manufacture, and easy to mount' and operate when attached to a door, Window or the like of a room or other enclosure. I

rlhe above and other objects and advantages of our invention are "fully set `torth in the following specification, taken with the accon'ipanying drawings; and the novel features of-our lock are precisely defined in the appended claims But this disclosure is explanatory only. and the principle of our invention be embodied in other constructions that are similar in eiiect, as indicated b v differences in the modes by which the characteristics of our improvement, as stated in iheseveral claims, are expressed.

(in the draivirr Figure l is a side view showing the, mechanism ot our imgroved. lock with the bolt retracted; f-

Figure 2 is a similar `vieiv showing the mechanism of our lock With the bolt projected;

Figure 3 is a horizontal section on the line 3-3 in Figure 2; Figures Lland 5 re similairespectively to" Figures l and 2 but show the mechanismot our lock from the opposite side;

. Figure 6 is a vertical section on the line 6-6 in Figure 5; i

`Figure 7 presents an inside view of the casing for kour lock;

Figures 8 and i() show in side elevation the members constituting the bolt of our loclgj Y Figure 9 is a similar vieiv ot a carrierfor i the bolt; and

Figures il, 'l2 dhd13 illustrate cams for operating the parts shown in Figures 8, 9 and lO respectively.

The same numerals identify the same parts throughout.

In the detailed description of what is illus. trated on they drawings, We employ the nu# moral l to indicate a casing having a back 2; a removable front 3, forming a closure Yfor the casing; a top and a bottoni; and sides Li; one of which has an opening 5. Through this opening is shot the bolt 6 of the lock,'

this bolt comprising a pair otmembersy 7 and S disposed in the casing l. The member 7 has a lateral projection k9 at its eX- tremity which isto be moved inand out through the ,opening 5; and the member 8 has asimilar lateral projectionvlO. We arrange the members so that the projection on one extends in the .opposite directionwith respect to the projection onthe other; the tivo projections constituting hooks to enable the bolt te be passed through an opening in a strike-plate and then engage the upper and lower edges thereof toy secure the door or other member to which the loclz is aiiixed in closed'position. This 'strike-'plate is not shownin the drawings. As Will be underen stood, itis mounted on the frame or j amb of the door, etc., in such position that the open" ing therein Will be in line with the opening 5, so that, Whenthe lock is manipulated as required5 the ends oit the members 7 and 8 bearing. the projections 9 and 10 can be shot out of the casing 1 through the strikefplate, or Withdrawn from the strike-plate and moved back into the casing. Each of these in the casing; and when this carrier is operated to be moved` towards or 'from the i opening 5, the two members or parts 7 and 8 of the bolt 6 are caused to be moved with it.

`members 7 and 8 is engaged by a `carrier lll The 'carrier l1' 'is preferablyiormed like a lint plate. lt lies entirely within the casing; never projecting therefrom; and its height is such that it spans the entire width ot' the casing inside ofthe latter between the top 12 and bottom 1. On the other hand, its `length is less than the distance between the opposite sides of the casing; hence longitudinal movement oi the carrier in the casing can be effected. At its forward and rear edges this carrier has transverse ribs 1a, these ribs being on both sides or faces of theplate, and tit-ting between corresponding ribs at the front and back ot the members of the bolt 6. To provide these ribs on the bolt, each ot the members 7 and 8 is made relatively thick at its .front end, adjacent the lateral projection or hook thereon, and thus shoulders 15 are presented on both faces ot the members 7 and 8, near the forward eX- tremities thereof; while at the opposite eX- tremities the edges of thermembers are bent over to provide transverse rear ribs 16. The carrier is located between the members 7 and 8 in the casing 1, and by placing the ribs 14k of the carrier between a shoulder 15 and the rear rib 16 of each member of the bolt, the carrier and the bolt are arranged in proper engagement, with the carrier and bolt capable of moi/*ing together towards and from the side @having the opening 5, and the members 7 and 8 are further capable of bodily or translational movement with respect to thecarrier to impel the projections 9 and 10 away from eachother after these projections have been shot out through the opening-5 and the opening in the strike-plate above-mentioned. To produce this combination ot movements, the carrier 11 has. a central. aperture 17, and the members 7 and 8 each have an aperture 18 and 19 respectively; and in the aperture 17 is a cam 20, in the aperture 18 a cam 21 for the member 7, and in the aperture 19 a cam 22 for the member 8. These three cams are mounted upon a shai't 28, in a bearing carried by the back 2 of the casing 1. y

By virtue ot' these cams, the carrier and the members 7 and 8 can all move together in one direction towards and .from the opening their the members have been moved towards this opening tillthe projections 9 and 1() have travelled out ol the casing as 'tar as they will go, the members 7 and 8 can be `given bodily or translational movement, with respect to the carrier, in a direction transverse to the direction just referred to. to iiinpel the lateral projections 9 and 10 away :trom each other, so that they can engage with the opposite edges ot' the opening in the strileeplate; and the dooi` is then secured.' To undo the lock, the members 7y and 8 are moved transversely of the direction of motion ot the carrier in` such a way asftv'olimpell the projections 9 and 10 towards each other; and then. carrier and' bolt together are moved back into the casing, away vtrom the openiing- 5, till the projections or hooks 9 and lO are completely withdrawn and the door is released.

The apertures 18 and 19 areelongated, and have preferably7 the shape shown in Figures 8 and 10, the greatest dimension ot these apertures being in the direction in which the carrier 11 can move. As for the aperture 17, it is elongated somewhat across the line of movement of the carrier, and has substantially the shape of a true heart, with a reentrant projection 2a on its 'forward edge and a similar projection 25 on its rear edge, and a recess 26 in the lower end ot the aperture 17, between these two projections. The lam 20 in this aperture is provided with a nose 27 at its 'forward corner; the rear corner beingl indicated at 28, andthe circumferential portion of the cam curved substantially on the are ot a circle, as indicated at 29. Ve give to the cams 18 and 19 substantially the shape of a triangle, with rounded advance corners 30, rounded rear corners 31, and circularly curved outer edges 32. rlfhese two cams 18 and 19 are spaced apart a kdistance ot about 180 angular degrees, yto afford the mode of operation desired.

The method by which the lock is operated may now he described in ull.` then the bolt is withdrawn, the parts all occupy the positions shown'in Figures 1 and a; the carrier lying in the casing remote from the opening 5, and the front edges ot the projections 9 and 10 being'4 flush with this opening; with the rear corner 28 of the cam 2() against the rear edge of the aperture 17. rlfhe i'irst rotation of the shaft causes the nose 27 to strike against the projection 211, and the arrier 11 is consequentlymoved in unison with the members 7 and 8 to malte the projections 9 and 10 pass through the openinp` 5 and the hole in the strike-plate to reach operative position. At this time the vn'iem-.ber 7 which lies adjacent the back 2, is

in its lowermost position; and the member 8, which is adjacent the front 8, is in its uppermost position; and these positions ot the two members are maintained ior about 9() angular degrees ot rotation of the cam 20. That is, the shaft 23 and cam 2O thereon will turn through a. quarter ot a circle and the only niiovement eilected will be movement ot' the carrier and both parts ot the holt in unison towards the sido of the casing containing the openingT 5: without the members 7 and 8 changinnl their relati positioils at all because the circular edge oli the cam 2l in the aperture Vi8 ot the meinber 7 will be engaging the lower ede ol" the aperture. 18, and the circular edge 2 oi the cam will be engaging the upper edge ci" the opening 22rd' the member Atterwai'd, in the further rotation of the sli-att the nose 27 passes the projection 2d, and

27 finally comes to rest in the recess 2o.`

During this portion of the revolution of the shaft 23, the forward corner of the cam 21 in the aperture 18 of thel member 7 will cngage with theyupper edge of the aperture 18 and the forward corner of thecam 22 in the aperture 19 of the part 8 will engage with thelower edge lof the aperture 19; and the members 7 and 8 will thusbe operated to move in opposite directions, transverse to the line of movement of the carrier; and the two projections Qand will be impelled away from each other. Under the conditions described, the member 7 may move upward and the otherv member downward,

although the relative movements of the two members may be reversedwithout essential alteration of the construction we have adopted. n v

Therefore, when. the nose 27 of the cam 2O finally stops in the recess atthe lower end of the opening 17 in the carrier, the cams 211 and 22 will have vmoved the members 7 and 3 transversely ofthe carrier as far as the opening 5 will allow; and the two `projections 9 and 10 now have positive engagement with the upper and lower edges of the strike-plate cooperatingl with vthe lock, and upon reverse movement of the shaft, the two cams 21 and 22 first move the members 7 and 8 to bring the projections 9 and 10 into position to clear the aperture in the strikeplate and the opening 5 and then the rear corner of the cam strikes the rearedge l of the opening 17 and thus the corner 23k of the cam 20 will withdraw both carrier the members 7 and 8 tending to move them back into the casing will only exert a turning movement on the cam 20 to force the nose 27 farther into the recess 26. This result-is due to the fact that the center of the y' edge 29 if the cam 29 lies below the level of the axis of the shaft 23 and the line of movement of the carrier 11. Also, both cams 2l and22 are revolved far enough to carry their forward corners30 as far as or even a little beyond a vertical line through the axis of the shaft. Therefore any outside force exerted against the members 7 and 8 to force the projections 9 and 10 towardseacli other,

into position to withdraw from the strikeplate and into the casing 1 can have no effeet upon the bolt. The lock is thus entirely burglar-proof; for the bolt cannot be re-l turned into the casing or the lock undone except by reverse movement of the shaft and the cams, even if one should attempt kto put a tool under the lower edge of the door andA lift it. ln such a case, the door would not lift, because'the members 7 and 3 hold it effectually against vertical movement through the one member making Contact with the upper edge of the aperture inthe strike plate, and the other member making contact withthe lower edge of said aperture.

The shaft 23 projects through the bearing therefor in the back 2, and carries a knob 33 to enable it to be operated. rlhis knob, when the casing is mounted on the door, will been the face'of the door presented to the interior of the enclosure to which the door belongs, because the lock will be aiiixed to that face. `lnsidethe casing this shaft will have flats 34 to make the cams 'turn withthe shaft, and the cam 2l adjacent the back 2 will have a stud or pin 35 to cooperate with an arm 36. This arm will be inside the casing, and will be mounted to revolve, as by aixing it to the inner end of the barrel of ar tumbler lock, or the inside member of a lock of any other construction. No such lock is shown, because it is not a part of our invention; but itmay be mounted inthe door, so that the carrier and bolt can be actuated'from the outside ofthe enclosure by means of a key. `/Vhenthe proper key is employed, the arm 3G can be vturned till it hits the pin 35, and then the bolt can be shot out into the striker-plate, or withdrawn into the casing 1 as may be desired` 7e also use in the casing 1 a guide plate 37, which lies against the back 2. This plate has yprojections at its corners to engage the bottom and top of the casing, as shown at 38, to make the plate t the casing snugly; and its upper and lower edges are turned over to make guide ribs or flanges 39, with which the member 7 makes contact as it moves in the casing 1. The vother member `is engaged by a retainer l0, fitted to the adjacent end of the shaft inside the casing, and having an opening through which thevpin 35 projects.l On the outside of the shaft 23 is a groove 41 and a clip 42 in this groove holds the retainer l0 in place against the member 7. n y

The lock can very easily be manufactured, because all the parts can readily be produced by stamping or otherwise. It can be turned out at low cost, and mounted on any door at very little expense. Further, itis adapted for` a door opening either way, be-

cause no change need be made to enable it to be aiiixed to a door that is hung to open to the right, instead of a door that is to open to the left, for example. In any such case, one need only revolve the casing 1 in a vertical plane to carry the opening 5 from right to left, or vice versa.

Having described our invention, what we believe to be new and desire to secure and protect by Letters Patent of the United Irltates is y l. lool; comprising a. double-latch bolt consisting` of a pair oi` members, a carrier to engage each ot said men'ibers, and elements to aotuate the carrier and the bolt in unison and then to impart bodily movement to said members with respect to the carrier While the carrier remains stationary.

2. A lock comprising a double-latch bolt consisting ot a pair of members,'a carrier to enggafe said members, and elementsvto more the carrier and the bolt in unison, and then to impart bodily movement to said members relative to the carrier to impel them in opposite directions.

3. A lock comprising a double-latch bolt consisting of a pair of independently movable members, a carrier to engage both of said members, an element to move the carrier and said members in one direction, and elements to in'iparttranslational movement, with respect to the carrier, to each of said members in opposite directions away from each other, and transversely to the firstnamed direction,

Il. A lock comprising a double-latch bolt consisting; of a pair of members, a carrier between said members and engaging each, an element to move the carrier and said members together in one direction, and elements to impart translational movement with respect to the carrier to each of said members in opposite directions, away from each other, and transverse to the lirst-named direction.

A look comprising a double-latch bolt consisting of a pair of independently movable members, a carrier to engage said members'` one of said members having a lateral projection at its extremity extending in one direction, and the other member having a lateral projection at uits extremity extending in rtheopposite direction, and elements to actuate the carrier and said members in unison and the members translationally with respect to the carrier to move said pro jections away Afrom each other.

6. A lock comprising a` double-latch bolt Consistingor` a pair of members, one of said members having; a lateral projection at its extremity extending in one direction, the other member having a lateral projectonat its extremity extending in the opposite direction, a carrier to engage each of said members, a cam to actnate the carrier to move the carrier and said members in unison, and cams to operate each ofsaid members to gzive same translational movement with respect to the carrier to impel said projections away trom each other.-

ln testimony whereof` We have signed our names to this specication.

BENJAMIN J. COHON. LOUIS MOSKOWITZ. 

